Water heating system



May 2.2, 1934 J. s. slMsoHN 1,959,933

WATER HEATING SYSTEM Filed Aug. 17, 1952 3 Sheets-Sheet l May 22, 1934-J. s. slMsoHN 1l959,936

WATER HEATING SYSTEM Filed Aug. 17, 1932 s sheets-sheet 2 @www May 22,1934. J. s. slMsoHN 1,959,933

WATER HEATING SYSTEM Filed Aug. 17, 1932 5 Sheets-Sheer:l 3

Arm/Mana.

UNITED STATES PATENT OFFICE WATER HEATING SYSTEM Julian S. Simsohn,Melrose Park, Pa., assignor to Pennsylvania Range Boiler Company,Phila.- delphia, Pa., a corporation of Pennsylvania Application August17, 1932, Serial N0. 629,108 y 2 Claims. (Cl. 122-32) This inventionrelates to an improvementJ in connected below'the water line, indicatedat 10, water heating system, and more particularly to Within thefurnace. one adaptable for the supply of hot water for The pipes e and fare each provided with a domestic use. manually. operated shut-off valveg, Ag and a 5 The system in accordance with this invention valve H,adapted to be electrically operated, or 60 comprises a combination ofelements whereby of the sylphon bellows type, is provided in pipe anadequate supply of hot water for domestic e. A thermostat I extendingwithin the furnace use may be maintained with a high degree of isarranged, as will be more specifically detailed economy and, at the sametime, with maximum hereinafter, to control the operation of valve H. leliiciency. The storage tank B is connected with a supply 55 Generallyspeaking the system in accordance of Water, through a pipe g' and isconnected to with this invention comprises as principal elethe domestichot water line through a pipe k. ments a storage tank, which vmay be ofdesired Beneath the tank B, or, if desired, formed capacity, and whichis equipped with means Within the tank at its lower end, is a water lwhereby contained water will be heated through chamber L, surrounded byan insulating casing 70 connection-with a domestic heating plant and m,and from which a pipe n extends within the with independent heatingmeans; the heating tank B to a point adjacent its upper end. Aboutelements being automatically controlled in a the pipe n is a sleeveo'closed at its top and novel manner so asA to promote their usereforming an annular air Space abOllt the Dpe n, spectively with maximumefficiency. More parin its extension within the tank B, which serves 75ticuluarly, the system in accordance with this to insulate the pipe nfrom the water in tank B.

invention comprises various details of the ar- Within the chamber L isan electric heating rangement and structure of the principal eleelementP connected into an electric circuit q, ments. into which is connected athermostat R posi- Having now indicated in a general way the tionedwithin the lower portion of the tank B 80 nature and purpose of thisinvention, I will and serving to control the element P. Water is proceedto a detailed descriptionof a preferred Supplied t0 the Chamber P fromthe bOttOm 0f embodiment and modifications thereof with refthe tank Bthrough a pipe :1: which may be conerence to the accompanying drawingsin which: nected to a drain controlled by a suitable valve a. Figure 1is a side elevation, partly in section, The thermostat I controlling theelectrically 85 of a water heating system in accordance with operatedvalve H is likewise connected into cirthis invention. cuit q, as is 'theoperating mechanism of the Figure 2 is a side elevation, partly insection, valve H, so that, as will be observed, the heatn of amodication of the system shown in Figing element P will not be energizeduntil the e5 ure 1. circuit q is closed by both the thermostat r and 90l Figure 3 is a side elevation, partly in section, and the thermostat Rand that hence the eleof a further modification of the system shown inment P will not be energized until the valve H Figure 1. is `closed by aclosing of the circuit through its Figure 4 is a sectional view showinga modiactuating mechanism through the medium of t0 cation of the lsystemshown in Figure 3. the thermostat, the valve I-I being set to be 95Referring morel particularly to Figure l, A inclosed on closing of thecircuit through its .acdicates a domestic heating plant or furnace,tuating mechanism and to open an opening of which may be of any usualtype, as steam, hot the circuit. water, vapor, or the like. Theoperation of the system shown in Figure B indicates a storage tank for adomestic hot l will now, it is believed, be readily understood. :m0

water supply. The space surrounding the tank Assuming the furnace A tobe in operation, the 'B is packed with insulating material which is hotwater in the furnace will activate the ther= held in place by ,thecasing C. mostat to break the circuit q, thus causing valve Within thetank B and extending vertically is H to assume an open position, andprevent the a coil D, the ends of which respectively are energizing ofthe heating element P. 105

spaced from the top and bottom of the tank. Hot water from the furnacewill circulate The coil D is connected at its ends to the furthrough thecoil D and through heat internace A vthrough pipes e and f,respectively, it change water in the tank B will be heated.

being noted that if the furnace is of the steam It will be noted thatdespite the closing of or vapor type the pipes e and f will be bothcircuit q by thermostat R, under the inluence 10 of the temperature ofthe water in the lower` in the-furnace is at a temperature sufficientlyhigh to Aeflicientlygheat water in tank B by circulation through coil D.

' If now the temperature of the water in the furnace becomes too .-lowto eciently heat water in the tank B, or if, as in summer, the

furnace is not operated, the thermostat will close the' circuitq'causing the valve H to beclosed and the thermostat R on cooling of theWater in the lower part of tank B will close circuit' o and the elementP Will be energized.

When element P is energized, it will heat water in the chamber L and acirculation between the tank B and chamber L will be set up through pine11, in which hot Water will rise to the upper part of the. tank B, andpipe through-Which cool water willenter the chamber L from the lowerpart of tank B.

Due to the arrangement of the thermostat I and the thermostat R, it willbe noted that when the heating element P is energized the valve H willbe closed, thus preventing circulation between the coil D and thefurnace. When the temperature of the water in the furnace is such as toheat the water in the tank B through circulation through coil D, thevalve H will be open and the circuit' q broken by'the aquastat I so thatelement P cannot be energized by the action of the thermostat in closingthe circuit.

Referring now to Figure 2 in which is shown a system similar to thatdescribed with refer- -ence to Figure 1, except for the provision of agas'burner in place of the'I electric heating element P, in Figure 2 theseveralelements,. which are thesame as those shown in Figure 1, aredenoted by the same reference letters.

In the system shown in Figure 2 a gas burner. 1 is positioned beneathchamber L andfis adapted to be supplied by means of a gas line 2,controlled adiacent the 'burner by a thermostatic valve 3,controlled byan element 9 extending within the tank B.` A pilot burner is providedand is supplied by a line 4, which bypasses the valve 3. In the pipe e,connecting the coil D with the furnace, there is provided a thermostaticor sylphon valve 5 vcontrolled by an element 6 extending within thefurnace A and which element alsov acts to control a ther- I 'mostatic,or sylphon, valve 7 in the main gas tank B extends upwardly through aflue 8 and enters the upper part of the tank laterally. .The ue extendsthrough the tank and connects with a chimney for the discharge ofhotgases of combustion from the burner 1.' Through heat interchange` thehot gases passing through the flue 8 heat water in the tank B and inpipe' n.

Theoperation of the system shown in Figure 2 is similar to that 'of thesystem shown in Figure l in that when the Water in the furnace issuciently hot to heat Water in tank B by circulation:v through coil Dthevalve 5 is open and the burner is prevented from operating by theclosure of valve 7 in the main gas line under the inuence of element 6,irrespective of. the.

f opening of valve 3 under the inuence of element 9. Incidently thevalve 7 when closed, permits sufficient gas to pass to supply the pilotburner, ora by-pass 10 capable of passing suiiicient gas for the pilotburner may be provided.

When the furnace becomes insuciently hot to heat the water in tank B thevalve 5 will be closed and gas valve 7 opened, thus permitting theburner 1 to be operated under control of element 9 and preventingcirculation between coil D and the furnace.

The system shown in Figure 3 is the same as that Ashown in Figure 1,except for adaptation of the elements to a horizontal as compared witha, vertical hot water storage tank. In Figure 3 the various elements thesame as those shown in Figure l are indicated by the same referenceletters used in Figure 1.

The system shown in Figure 4 is the same as that shown in Figure 2,except for adaptation to a horizontal as compared with a vertical hotwater storage tank and for omission of a showing of the furnace andcirculation and gas control valves which may be identical with thoseshown in Figure 2.

It will be appreciated that various modications in details ofconstruction and arrangement over those shown and described hereinforillustrative purposes may be made without departing from the scope ofthis invention; and as will be obvious, the system embodying thisinvention may be adapted to various types of heating devices other thanelectric and gas heaters, as, for examp1e,oi1 heaters, within the scopeof the invention involved.

What I claim and desire to protect byiLetters Patent isz. l

l. A hot water heating sy'stem including in combination a storage tank,means for the supply of water to said tank, heat exchange means forheating water in the storage tank, means for supplying a heated uid tosaid heat exchange means, an independent heating element arranged toheat water in said storage tank, means controlled by the Atemperature ofwater in said tank for activating said independent heating element andmeans controlled by the temperature of said heated fluid for preventingactivation of said independent element when the temperature of saidheated uid is above a predetermined minimum. A

2. A hot water heating system including a storage tank, a domesticfurnace containing a heating fluid, a coil within said tank andconnected for the circulation therethrough of water from said furnace, avalve arranged to control circulation through said coil, an independentheating means arranged to heat water in said tank, a thermostat withinsaid tank and arl ranged to control said independent heating means and athermostat Within saidfurnace 'arranged when a heating uid in saidfurnace is above a predetermined temperature to control said valve topermit circulation through said coil ,and to prevent operation of saidindependent heating means and when the temperature of aheating uid insaid furnace is below said predetermined temperature to control saidvalve to prevent circulation through said rcoil and permit operation ofsaid independent heating means.

JULIAN S. SIMSOHN.

